该图表展示了六个城市地铁系统的特点。
The table demonstrates the features of the underground railway systems in 6 cities.
同时这也继承了逻辑卷和文件系统的特点。
The logical volume and file system characteristics are also inherited.
文中详细叙述了这种系统的特点、组成和工作原理。
The features, the system composition and operation principle of this system are described in detail.
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